Expedia sold me a Hahn Air flight operated by VietJet. They gave a ticket number and a confirmation code, as is done with other airlines. I would like to manage by booking and select seats, plus perhaps buy luggage allowance but I cannot find where to do it.
A Google search for Hahn Air gives pages that are intended for travel agents and charter airlines but I cannot find anything consumer accessible. In hope it might work, I tried both the ticket number and confirmation code on the VietJet website. Neither were recognized unfortunately.
Where to we select seats and buy luggage allowance for Hahn Air flights?